A refrigerant-to-water heat exchanger can be added to air-conditioning equipment to heat water using the waste heat in the vapor compression refrigerant cycle. Where is this type of heat exchanger located in the refrigerant loop?
In general, which of the following is the least expensive and easiest way to finance an energy project?
What is a common method to reduce the impact of voltage imbalance?
How can commissioning reduce the life-cycle cost to owners and operators?
At the end of a performance contract, who owns the equipment installed by the project?
You can buy air compressor A for $15,000 or air compressor B for $6,000. Compressor A will cost $10,000 per year to operate. Compressor B will cost $11,500 per year to operate. If both air compressors have a 10-year life and your required return on investment is 12%, which air compressor has the lowest total life-cycle cost?
Which of the following instruments is most useful for tracking long-term boiler performance?
In an ammonia-water absorption chiller, what material is the refrigerant?
A new energy-efficient boiler costs $60,890 to buy and install. The new energy-efficient boiler will save $15,400 per year and last for 20 years. What is the internal rate of return (IRR) of the project?
